Your Questions Answered - GreenCast

How does Rescue selectivelycontrol certain grasses?Rescue is an ACCase inhibitor. Pinoxaden, the active ingredient inRescue, works by inhibiting the ACCase enzyme blocking thebiochemical pathway by which plants form new cell membranes. Poaannua contains a form of ACCASe that is resistant to Pinoxaden. Otherspecies, such as Ryegrass, have a form of this enzyme that is highlysusceptible.Fescue grasses have a fine leaf architecture that limits uptake of theactive ingredient and leaves plants unaffected at the recommended doserates.Grass identification is important to assess what species are present in thesward and how they will be affected by Rescue.